Why does the Audi A8 use a turbocharged engine?

I am considering purchasing an Audi A8 and noticed that it uses a turbocharged engine. What are the benefits of this type of engine and how does it affect the car's performance?

Turbocharged engines use a smaller engine size for the same amount of power compared to a naturally aspirated engine. This results in better fuel efficiency and lower emissions.

Audi uses turbocharging in their A8 models to improve acceleration and overall performance. The forced air from the turbo allows more fuel to be burned, resulting in a more powerful and responsive engine.